I've been looking into construction project delays recently, and something caught my attention: sometimes, it's not a major setback that puts a project behind schedule. It's the smaller issues that keep piling up. A delayed material delivery, a subcontractor waiting on another team, a last-minute client change, or simply not knowing who's responsible for the next step. Individually, these may seem like minor problems. But how often do they end up affecting the entire project timeline? I'm curious to hear from contractors, project managers, and construction professionals here: What's the one issue that most frequently throws your project schedule off track? Is it material availability, labour coordination, subcontractor delays, client changes, or something else? Would love to hear some real-world experiences!